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Show that the set A={n^2 +n+1:n∈N}is infinite countable? A steel cable at 33 m mass 130 kg
is connected to two poles. Tension 4,238 N and the cable vibrates with a frequency of 2 Hz. Calculate the wavelength of the resulting wave on the cable.? A=8a=8 , b=8b=8 and ∠C=140∘∠C=140∘. Find the length of side cc and measures of the angles, ∠A∠A and ∠B∠B (in degrees? Find the area under the standard normal curve to the right of z = 1? What are the technological uses of Uranium-234?